fix(deepseek-plugin): first-turn recall, native activation, and cancel-safe recall (#7284, #7302)

Ports #7285 onto current main and adds a canDeliver() gate so a canceled recall does not mark undelivered memories as seen.

Refs #7284, #7302. Supersedes #7285.

integrations/deepseek-plugin/tests/package.test.ts

@@ -0,0 +1,14 @@
+import { readFileSync, existsSync } from "node:fs";
+import { describe, expect, it } from "vitest";
+
+describe("installable Harness bundle", () => {
+  it("ships a native activation patch and builds before packing", () => {
+    const root = new URL("../", import.meta.url);
+    const manifest = JSON.parse(readFileSync(new URL("package.json", root), "utf8"));
+    expect(manifest.scripts.prepack).toBe("pnpm build");
+    expect(manifest.dsh.bundle.patch).toBe("./cordis.patch.yml");
+    expect(manifest.files).toContain("cordis.patch.yml");
+    expect(existsSync(new URL(manifest.dsh.bundle.patch, root))).toBe(true);
+    expect(readFileSync(new URL(manifest.dsh.bundle.patch, root), "utf8")).toContain("@mem0/deepseek-plugin");
+  });
+});